#include<stdio.h>
#include<unistd.h>
#include<sys/types.h>
int main(){


    printf("begin:我是一个进程,pid=%d,ppid=%d\n",getpid(),getppid());
    pid_t id = fork();
    if(id==0){
        while(1){
            printf("我是子进程,pid=%d,ppid=%d\n",getpid(),getppid());
            sleep(1);
        }


    }
    else if(id>0){
        while(1){
            printf("我是父进程,pid=%d,ppid=%d\n",getpid(),getppid());
            sleep(1);
        }
    }
    else{
        //
    }
    //pid_t id=getpid();
    //while(1){
       // printf("I am a process,my id is:%d,parent:%d\n",getpid(),getppid());
        //sleep(1);
    //}
    return 0;
}
